Will I lose my data if I change phone or watch?

No. Your results are saved in your YuMuuv account, not on the phone. Log in to the same account on your new phone and connect your watch or health app again.

1. Install YuMuuv on the new phone and tap Login. Don’t sign up again, as that creates a second account.
2. Tap your profile circle (top right) → Your details → Change integration and connect your watch or health app again. Allow all the permissions.
3. Tap Update your data.

If you switch to another watch brand, or make a new account in your watch’s app, connect that one under Change integration. If both the old and new phone still send steps, remove the old phone as a step source so steps aren’t counted twice.

Days missing around the switch can be fixed: How do I correct wrong steps?